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Most Recent Articles
Emerald Symbolism
Emerald symbolism encompasses not only royalty but also wit, eloquence, and foresight. Learn more about the legends surrounding this prized jewelry stone.
Alexandrite Value, Price, and Jewelry Information
“Emerald by day, ruby by night,” alexandrite is well known for displaying one of the most remarkable color changes in the gem world — green in sunlight and red in incandescent light. However, the modern June birthstone is so rare and expensive few people have seen a natural alexandrite. This variety of gem-quality chrysoberyl makes an excellent jewelry stone.
Colemanite Value, Price, and Jewelry Information
Colemanite is an abundant mineral, and transparent material isn’t rare. However, gem cutters rarely facet these typically pale stones. Difficult to cut and wear, colemanites are better suited for collectors of unusual gemstones.
Tzar: Online Faceting Designs and Diagrams
The Tzar gem design by Jeff Graham works best for large, light-colored stones. This cut will make a very interesting, different gemstone.
What is Gemstone Birefringence?
Gemstone birefringence is a measure of a gem’s double refraction. Learn how it’s used to identify gems and see the effects birefringent gems can display.
Painite Value, Price, and Jewelry Information
Until 2001, only three painite crystals were known to exist. Since then, additional discoveries have produced many more specimens of this deep red gemstone, but facetable material remains very rare.
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Sign up for a Pro Membership"Becoming a Pro Member of IGS just made good sense for my business. The gemology resources are fantastic, and my profile lets potential customers know I am serious about colored gemstones. And frankly, if I get any exposure to potential customers it's a no-brainer."Paul Bierker, Paul Michael Designs
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